5e60c17f49
For some reason clang does not support &((struct foo*)0)->field in static assertion contrary to gcc. Use offsetof() macro implementation provided by both compilers instead. Type: fix Change-Id: I3311cdd29c5861e45dc0ef92f2bbd66242ca73b8 Signed-off-by: Benoît Ganne <bganne@cisco.com>
142 lines
4.6 KiB
C
142 lines
4.6 KiB
C
/*
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* Copyright (c) 2015 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef included_error_bootstrap_h
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#define included_error_bootstrap_h
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/* Bootstrap include so that #include <vppinfra/mem.h> can include e.g.
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<vppinfra/mheap.h> which depends on <vppinfra/vec.h>. */
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#include <vppinfra/clib.h> /* for uword */
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enum
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{
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CLIB_ERROR_FATAL = 1 << 0,
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CLIB_ERROR_ABORT = 1 << 1,
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CLIB_ERROR_WARNING = 1 << 2,
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CLIB_ERROR_ERRNO_VALID = 1 << 16,
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CLIB_ERROR_NO_RATE_LIMIT = 1 << 17,
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};
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/* Current function name. Need (char *) cast to silence gcc4 pointer signedness warning. */
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#define clib_error_function ((char *) __FUNCTION__)
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#ifndef CLIB_ASSERT_ENABLE
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#define CLIB_ASSERT_ENABLE (CLIB_DEBUG > 0)
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#endif
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/* Low level error reporting function.
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Code specifies whether to call exit, abort or nothing at
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all (for non-fatal warnings). */
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extern void _clib_error (int code,
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char *function_name,
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uword line_number, char *format, ...);
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#define ASSERT(truth) \
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do { \
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if (CLIB_ASSERT_ENABLE && ! (truth)) \
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{ \
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_clib_error (CLIB_ERROR_ABORT, 0, 0, \
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"%s:%d (%s) assertion `%s' fails", \
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__FILE__, \
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(uword) __LINE__, \
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clib_error_function, \
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# truth); \
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} \
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} while (0)
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/*
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* This version always generates code, and has a Coverity-specific
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* version to stop Coverity complaining about
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* ALWAYS_ASSERT(p != 0); p->member...
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*/
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#ifndef __COVERITY__
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#define ALWAYS_ASSERT(truth) \
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do { \
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if (PREDICT_FALSE(!(truth))) \
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{ \
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_clib_error (CLIB_ERROR_ABORT, 0, 0, \
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"%s:%d (%s) assertion `%s' fails", \
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__FILE__, \
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(uword) __LINE__, \
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clib_error_function, \
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# truth); \
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} \
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} while (0)
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#else /* __COVERITY__ */
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#define ALWAYS_ASSERT(truth) \
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do { \
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if (PREDICT_FALSE(!(truth))) \
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{ \
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abort(); \
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} \
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} while (0)
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#endif /* __COVERITY */
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#define STATIC_ASSERT(truth,...) _Static_assert(truth, __VA_ARGS__)
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#define STATIC_ASSERT_SIZEOF(d, s) \
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STATIC_ASSERT (sizeof (d) == s, "Size of " #d " must be " # s " bytes")
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#define STATIC_ASSERT_SIZEOF_ELT(d, e, s) \
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STATIC_ASSERT (sizeof (((d *)0)->e) == s, "Size of " #d "." #e " must be " # s " bytes")
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#define STATIC_ASSERT_OFFSET_OF(s, e, o) \
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STATIC_ASSERT (STRUCT_OFFSET_OF(s,e) == o, "Offset of " #s "." #e " must be " # o)
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#define STATIC_ASSERT_FITS_IN(s, e, o) \
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STATIC_ASSERT (STRUCT_OFFSET_OF(s,e) <= (o - sizeof(((s *)0)->e)), \
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#s "." #e " does not fit into " # o " bytes")
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/* Assert without allocating memory. */
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#define ASSERT_AND_PANIC(truth) \
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do { \
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if (CLIB_ASSERT_ENABLE && ! (truth)) \
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os_panic (); \
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} while (0)
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#endif /* included_error_bootstrap_h */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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